Download or read book Anicut systems in Sri Lanka The case of the Upper Walawe River Basin written by François Molle and published by IWMI. This book was released on 2003 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exploratory study was designed to capture the main features of agrarian change in the upper part of the basin that depends mostly on anicuts. These anicuts amount to 59 percent of the total basin anicuts in terms of numbers, but to only 43 percent in terms of irrigated area. They are generally very old (the history of some of them goes back to 2000 years; see below) and obviously, many changes have occurred during this time. The study does not allow the reconstitution of all past transformations but offers some insight on recent changes: changes in population pressure over resources and changes in hydrology, crop choice, livelihoods and collective action. The analysis is based on exploratory surveys carried out by the authors and by students of the University of Sabaragamuwa and is not a detailed or in-depth investigation of agricultural systems in the Upper Walawe basin. However, it provides a useful outline of the situation in this part of the basin.
Download or read book Small Anicut Systems in Nilwala River Basin written by G. G. de L. W. Samarasinha and published by . This book was released on 2011 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Small tank cascade systems in the Walawe River Basin written by P. G. Somaratne and published by IWMI. This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report on small tank cascade systems is based on a study conducted on seven tank cascades of the Walawe river basin, one of the three main river basins in the Ruhuna benchmark basins selected by the International Water Management Institute (IWMI) for its benchmark basin study.The overall objective of this study is to document the situation of small tank cascade systems in the basin, paying special attention to their evolution under agro-ecological, socio-economic and institutional changes on an unprecedented scale in the country after the introduction of open market economic policies in the 1970s, and thereby to contribute to the existing knowledge on small tank cascades, a key feature of water resources in the Dry zone regions2 of Sri Lanka since time immemorial.
Download or read book Economics and politics of water resources development Uda Walawe Irrigation Project Sri Lanka written by Molle, Francois, Renwick, M. and published by IWMI. This book was released on 2005 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Uda Walawe Irrigation and Resettlement Project (UWIRP) located in the Southern dry zone of Sri Lanka was initiated in the early 1950s. The original plan for the UWIRP was a highly ambitious social, economic and physical engineering project aimed at creating a modern, profitable agriculture sector. This report examines the history of water resources development and investment decisions for the UWIRP over a period of 50 years and uncovers underlying processes that shaped the evolution of the project and highlights the limitation of viewing development as a mere set of technical and social engineering endeavors.
Download or read book Balancing irrigation and hydropower Case study from Southern Sri Lanka written by Molle, François, Jayakody, Priyantha, Ariyaratne, Ranjith, Somatilake, H. S. and published by IWMI. This book was released on 2005 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report analyzes a case from southern Sri Lanka, where the Samanalawewa dam and the Kaltota Irrigation Scheme (KIS) compete for the water of the Walawe river. At the catchment level, it is shown that dam releases are well attuned to the needs of KIS and to the occurrences of natural runoff, and that little of the dam water is "lost" to the river.
Download or read book Managing Conflict in Watersheds of Sri Lanka written by and published by . This book was released on 2010 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Promise Trust and Evolution written by Rucha Ghate and published by Oxford University Press, USA. This book was released on 2008-01-10 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines the management of Common Property Resources, like water, forestry, and land, and is intended to provide an account of the transformation of the commons in a rapidly changing South Asia. Contributions cover a wide range of natural resources and deal with issues such as equity, efficiency, productivity, and sustainability.
Download or read book An assessment of hydrology and environmental flows in the Walawe River Basin Sri Lanka written by Smakhtin, Vladimir and published by IWMI. This book was released on 2005 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantification of hydrological processes and water requirements of aquatic ecosystems is required for many projects related to environmental security and efficient water use in agriculture. This also applies to the Asian monsoon region. This paper focuses on the Walawe River basin, located in a semi-arid zone of southern Sri Lanka. The two major reservoirs in the upstream and middle reaches of the river with a total capacity of 486 million cubic meters (MCM) have significantly affected the hydrology of the river, with associated adverse environmental and social consequences.
Download or read book Environmental Water Requirements in Mountainous Areas written by Elias Dimitriou and published by Elsevier. This book was released on 2021-10-19 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Water Requirements in Mountainous Areas presents comprehensive and scientifically sound approaches and methodologies for estimating the environmental water requirements and tradeoffs for water allocation by analyzing anthropogenic and natural water needs. The book covers environmental water management issues in mountainous areas, specifically focusing on the Mediterranean region which exhibits significant contrasts in its demographic and hydrologic features. The authors include paradigms and information that will be useful for water resources managers, decision makers, scientists working in the fields of ecology and water resources management, engineers that design hydraulic works, and environmental policymakers. Offers a complete background screening on theoretical and practical guidelines on estimating environmental water requirements in mountainous areas Promotes and guides interdisciplinary work with information on policies and best practices in the field of ecological flows and water resources management Provides examples and case studies on the successful implementation efforts of ecological flows to analyze lessons learned and overcome practical issues and solutions
Download or read book Rehabilitation of Small scale Irrigation Systems in Sri Lanka written by Shyamala Abeyratne and published by IWMI. This book was released on 1990 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developing effective institutions for water resources management A case study in the Deduru Oya Basin Sri Lanka written by P. G. Somaratne and published by IWMI. This book was released on 2003 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is based on a research project financed by the Asian Development Bank (ADB) to conduct a regional study for the development of effective water management institutions (ADBRETA no 5812). Research activities were conducted in five river basins in Indonesia, the Philippines, Nepal, China and Sri Lanka for a period of three years commencing from 1999. The river basin studied in Sri Lanka was the Deduru Oya river basin in the North Western Province of the country. This report contains the findings of the Deduru Oya basin study. The overall objective of the case study conducted in Sri Lanka was to help the government of Sri Lanka to improve the institutions managing scarce water resources within the frame work of integrated water resources management. This case study included a comprehensive assessment of the existing physical, socio-economic and institutional environment in the river basin and also the long term changes that are likely to take place.
Download or read book The value of traditional water schemes small tanks in the Kala Oya Basin Sri Lanka written by Shamen Vidanage and published by IUCN. This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental and social values of river water Examples from the Menik Ganga Sri Lanka written by Priyanka Dissanayake and published by IWMI. This book was released on 2007-11-27 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many decisions on water allocation in river basins are made on economic grounds. Environmental and social benefits of water should also be considered in river basin management, and attempts should be made to value them similarly. This is not a straightforward task and very few studies have directly addressed this issue to date. In this paper, the Menik Ganga (River) in southern Sri Lanka is used as a case study to attempt and evaluate the costs and benefits of environmental water allocations, referred to as ‘environmental flows™ (EF). In this study, a broad definition of EF is used: the components of EF evaluated include the requirements of the religious festival, the requirements of the Yala National Park, the requirements of the Pilinnawa Coastal Wetland and the requirements of the Yala Fishery Management Area, off the coast. Almost all estimates are based on use values of EF such as marketed goods and recreation. For some components multiple estimates have been attempted. The religious EF requirement is estimated using the cost of alternative water supplies. The benefits of the EF requirement for the Yala National Park are estimated using the forgone value of tourism in the dry season and the benefits of avoiding the Human-Elephant Conflict. The Additional expenditure for the park in the dry season is also presented as another proxy estimate of the benefits of EF. The Benefit Transfer method was used for the Pilinnawa Wetland and grassland due to data constraints. The market prices of lobster and income of chank divers are used as proxies for the economic benefits of EF to the Yala Fishery Management Area. Finally, the cumulative value of the individual components is presented and discussed. The paper intends to stimulate discussion and further research on the complex subject of valuing the social and environmental benefits of water whether it is in the Menik Ganga, elsewhere in Sri Lanka or elsewhere in the world.
Download or read book Examining International Land Use Policies Changes and Conflicts written by Hasnat, G. N. Tanjina and published by IGI Global. This book was released on 2020-11-06 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Though conflicts continue to arise over land use and land cover changes, the conversion of forest land to cropland or other land uses such as housing and urban development have been on the rise in recent years. Decisions regarding land use and land cover influence climate change as well as various natural processes. While proper changes can minimize the effects and speed of climatic changes, the continued adverse changes may be accelerating the deterioration of the world’s condition. Examining International Land Use Policies, Changes, and Conflicts presents the latest research on the present status of land use and land cover changes throughout the world in order to determine appropriate land use policies that can protect earth’s present and future condition. The findings of the studies investigate the conflicts behind the land tenure and land uses in different countries of the world and examines existing policies and the reasons behind changes in them. Ultimately, the book provides readers with knowledge on how land can be managed in a sustained manner, how landscape models are helpful for predicting and determining future land uses, how land can be managed with the best architectural measures, and how urban forestry is helpful for better environmental management and adapting or mitigating climate change effects. Land users, agriculturalists, urban planners, policymakers, government officials, researchers, academicians, and students looking to improve their understanding of this topic for better use of land in the future will find this book to be an asset to their current research.
Download or read book Rehabilitation of Irrigation Systems in Sri Lanka written by W. A. T. Abeysekera and published by IWMI. This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction; Tank irrigation modernization project; Gal Oya Water management project; Major irrigation rehabilitation project; Uda Walawe rehabilitation project; Irrigation systems management project; Experiences and lessons learned; Research issues for further investigations.
Download or read book Integrated River Basin Management the Sri Lanka Experience written by N. T. Atukorala and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Analysis of Intersectoral Water Allocation in Southeastern Sri Lanka written by Sarath Parakrama Weligamage and published by . This book was released on 2011 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:
